Asuga Baja 5B, 5T, Rovan, King Motor - Gassers or Brushless

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Horatio

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As some of you here know, I'm a long time Baja 5B enthusiast.

For me, the Baja 5B has been the gift that just kept on giving. 16 years on, the rig I imported into the UK from Stormer Hobbies for the princely sum of $894 was worth every penny. The favourable exchange rate at that time meant that I received my enormous kit at a much better price than the UK.

My new gasser got used every weekend that I could, on a track - mainly against FG's Marders and Leopards, and a couple of other Bajas.

We even had some Max Bashers crew turn up from time to time. Racing at our regular 1/8th track couldn't happen, because these rigs shredded the track and the noise was too much for a nearby holiday park.

So for a time, a club started to form on a former RAF airfield. It was fun - but access was difficult and we weren't allowed to have a rostrum or anything permanently on the land. Shame - because we had a really good track there for a time.

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Then, because the Baja sounded like a Moto X bike, options for blasting around became very limited.

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For a time, my noisy fuel guzzlers were confined to the garage.

Then, circumstances changed and I could at least get to use my noisy machines.

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Whilst my Baja had some upgrades, I was beginning to realise that it had not received as much love as it deserved.

So, the mission began.

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Engine was given some TLC, mesh modded and given an outerwear.

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Upgraded the brakes.
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I persevered with Baja bodies and their grass collectors for a time...
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Until it was time to try something different. Running the Baja 'naked' was just something I never did. I always wore clothes. 😝

So over winter lockdowns in 2020, I decided to build 5" FPV drones, something I've been thoroughly absorbed by since. This for a few months put any/all upgrades for RC cars on stop.

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2021 for the most part was a year I'm sure most of us would sooner forget. The earlier part of the year was full of setback and sadness. By the summer, when most of us should have been enjoying the weather, we were still trying to avoid the lab leak virus. 🙄 I was also in the midst of a major career change.

RC highlights included:
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And my revisiting my childhood RC:
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So the Baja went through a new phase of upgrades in 2023. The worst of the virus drama was over and people started to return to normality.

Bonehead Carbon upgrades were applied throughout, chassis plates, pin braces, mounts - all through.

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The time had come to lose the body shells.
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And kit the car with some stronger gear.
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A splash of alloy upgrades and now the Baja was heading in a specific Carbon with alloy loom - with a hint of SS orange.
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Fuel lines and induction were improved and yielded a 2 mph improvement in top speed - but more importantly - made for instant starting.

2024 brought a year filled with family medical drama, a home move, musical commitments, recording and work - but with a new home came a bigger workshop....
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And time for a new TR Quick Diff....
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Following a trip to Prague, it was time to really see what this rig could do.....
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By Baja standards - this rig is light as a feather - considering the ridiculously heavy wheel and tyre combo. 🤣

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Latest upgrades include an improved steering arrangement and a split, steel roll cage.
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The Baja has been properly pampered! 🤩
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I'm moving over 'heritage' parts from the SS, whilst improving things where I can. Watch this space if you like seeing the world's most upgradeable platform continuously evolve. I'm not the only member here with a Baja fetish - so show us what you got too! 😎👍
 
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Guilty! I have the Baja fetish too! Been wanting one for several years and finally pulled the trigger 2 months back, unlike @Horatio I went with the 5t model over the 5b, in fairness other than the body and some side skirts they are the same vehicle, with his help it was upgraded to what it is today, Horatio was very helpful in pointing out a few areas that would cause issues down the road so I opted to upgrade those right away.
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So here's how she sits now, I widened mine out a bit-15mm wheel spacers and went with 5b rear tires on all 4 corners, it's currently powered by a heavily ported 38cc engine-36cc out of the box but I went with a different cylinder design which just happened to have a 1mm larger bore, I also have a brand new 34cc esp/zenoah race ported engine on standby waiting to go in once I've asked too much from this modified rovan engine, knowing that more power was available from the engine mods and also future engine I went ahead and put ddm black magic hardened gears in the transmission as well as a metal spur gear. I also upgraded the servos and went with the latest v3 steering setup, not nearly as fancy as the symmetric steering setup but it'll do for now, there's probably more I did to it, a lot happened in a short time and I'm currently building a losi 5ive-b clone so can't remember or keep everything straight.
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Guilty! I have the Baja fetish too! Been wanting one for several years and finally pulled the trigger 2 months back, unlike @Horatio I went with the 5t model over the 5b, in fairness other than the body and some side skirts they are the same vehicle, with his help it was upgraded to what it is today, Horatio was very helpful in pointing out a few areas that would cause issues down the road so I opted to upgrade those right away.
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So here's how she sits now, I widened mine out a bit-15mm wheel spacers and went with 5b rear tires on all 4 corners, it's currently powered by a heavily ported 38cc engine-36cc out of the box but I went with a different cylinder design which just happened to have a 1mm larger bore, I also have a brand new 34cc esp/zenoah race ported engine on standby waiting to go in once I've asked too much from this modified rovan engine, knowing that more power was available from the engine mods and also future engine I went ahead and put ddm black magic hardened gears in the transmission as well as a metal spur gear. I also upgraded the servos and went with the latest v3 steering setup, not nearly as fancy as the symmetric steering setup but it'll do for now, there's probably more I did to it, a lot happened in a short time and I'm currently building a losi 5ive-b clone so can't remember or keep everything straight.View attachment 8006
Thanks for kind words! 🤩 This is a beast of a rig and such a refreshing change to see such an exhaust system contained within the rig! 💯

I've been impressed by your engine mods. I've messed with porting on nitro engines - but don't have the same confidence grinding away on my Gassers! Might give it a try later this year if I end up with my Fuelie CY 26 as a spare.

Your 5ive B clone looks awesome. Can't wait to see how you get on with it. I see similar 30DN clones in the UK, but the Rovan I think requires importing in.

I'll be finishing up some wrenching after work today and will post pictures here. 👍
 
To bloody noisy & pain in the ass cutting my hedge with petrol clippers gives me all the 2 stroke buzz I need 🤣 Though my nephew got a little husqavarna might have to have a little rip on. I saw thunder rc picked up a Rovan not sure if it a new model the E LT not a gasser but it a unit of a rig, he few vids with it



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To bloody noisy & pain in the ass cutting my hedge with petrol clippers gives me all the 2 stroke buzz I need 🤣 Though my nephew got a little husqavarna might have to have a little rip on. I saw thunder rc picked up a Rovan not sure if it a new model the E LT not a gasser but it a unit of a rig, he few vids with it



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They are loud to be fair, but there's something about that 40 minute run time and not have to worry about large lipo pack charging etc.

I think it's pretty safe to say, regardless of preferences, both types have their virtues. There's something nice and mechanical about these relics! 💪😝

I like your nephew's dirt bike! When I was younger I had a YZ125 Moto X bike. It was a blast!

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Dirt bike v Baja.
 
Guilty! I have the Baja fetish too! Been wanting one for several years and finally pulled the trigger 2 months back, unlike @Horatio I went with the 5t model over the 5b, in fairness other than the body and some side skirts they are the same vehicle, with his help it was upgraded to what it is today, Horatio was very helpful in pointing out a few areas that would cause issues down the road so I opted to upgrade those right away.
View attachment 8005

So here's how she sits now, I widened mine out a bit-15mm wheel spacers and went with 5b rear tires on all 4 corners, it's currently powered by a heavily ported 38cc engine-36cc out of the box but I went with a different cylinder design which just happened to have a 1mm larger bore, I also have a brand new 34cc esp/zenoah race ported engine on standby waiting to go in once I've asked too much from this modified rovan engine, knowing that more power was available from the engine mods and also future engine I went ahead and put ddm black magic hardened gears in the transmission as well as a metal spur gear. I also upgraded the servos and went with the latest v3 steering setup, not nearly as fancy as the symmetric steering setup but it'll do for now, there's probably more I did to it, a lot happened in a short time and I'm currently building a losi 5ive-b clone so can't remember or keep everything straight.View attachment 8006
The Rovan stuff is really decent quality. I love your Baja truck. Your upgrade list is extensive already. 😅

I've been looking at your Rovan SLT Buggy and it's a great looking rig - in the UK, it seems like it can only be imported. But it looks like a solid choice, given the Losi 5ive bits should all fit. I'm extremely tempted. 😎
 
Well my current phase of upgrades for the Baja are complete.

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This GBE CNC Mount replaces my stock rear upper engine mount, which I managed to crack. It's a solid option and affords an extra mating point to the engine. Win win. Pricey at £40 - but worth it.

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The split steel roll cage is quite a purposefully made and sturdy upgrade. The finish wasn't great, with some rough edges and the roof spoiler was scratched. So it made perfect sense to wrap it with gloss 3D Carbon Fibre finish.

Because the cage is split/hinged, it should make future access a little more convenient. However - the rear wing mount holes are wider apart, so I had open the holes in my original SS wing. 😱 Sacrilege.

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The steering appears to be functioning as hoped. It affords a greater range of steering angles and the CNC steering horn is an absolute beast.

I notice the track rod angle is steeper to the arms and Ackerman has noticeably increased. This may be a good thing, but I'm going to reserve judgement until I've had a good amount of run time with it.

Spring is here, the grass is growing - and the Baja is less bothered by the cold in comparison to my brushless rigs.

Time for a blast I think! 😁👍
 
The Rovan stuff is really decent quality. I love your Baja truck. Your upgrade list is extensive already. 😅

I've been looking at your Rovan SLT Buggy and it's a great looking rig - in the UK, it seems like it can only be imported. But it looks like a solid choice, given the Losi 5ive bits should all fit. I'm extremely tempted. 😎
I'm liking what I see with it so far, only thing I'm not impressed with is the servo mount/battery/receiver box, it flexes when you use the throttle/brakes but they do have an aluminum brace that connects it to the center diff to keep that from happening. Parts availability for it is good as well, I call it a 5ive-b because well it's a buggy but what they've actually done is taken a 5ive-t and just put a shorter chassis under it so everything is 5ive-t compatible aside from chassis, rear brace, rear driveshaft and exhaust.

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There, this should be a little more multi terrain friendly!
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All that's left is doing the engine, I'm not satisfied with the cylinder design at all, poor transfer port design and had a massive squish band, I trimmed .030 off the base which tightened the squish, then went and raised the ports but can't get over the transfers having no dividers so they offer no ring support, my esp 32cc cylinder is scheduled for delivery tomorrow and that should pretty much wrap this build up.
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Quick size comparison so everyone can appreciate just how big these things are, mind you my Baja is 10" longer than this 1:5 buggy too!
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I'm liking what I see with it so far, only thing I'm not impressed with is the servo mount/battery/receiver box, it flexes when you use the throttle/brakes but they do have an aluminum brace that connects it to the center diff to keep that from happening. Parts availability for it is good as well, I call it a 5ive-b because well it's a buggy but what they've actually done is taken a 5ive-t and just put a shorter chassis under it so everything is 5ive-t compatible aside from chassis, rear brace, rear driveshaft and exhaust.

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Hell yeah - just had a look on Ali - not suitable for children under 36 months. 🤣🤭 I'm in. 🤞😅 Allegedly it takes 60 days to ship, so I better get my order in quick before the summer has gone! 😝
 
They are loud to be fair, but there's something about that 40 minute run time and not have to worry about large lipo pack charging etc.

I think it's pretty safe to say, regardless of preferences, both types have their virtues. There's something nice and mechanical about these relics! 💪😝

I like your nephew's dirt bike! When I was younger I had a YZ125 Moto X bike. It was a blast!

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Dirt bike v Baja.
Now this is giving me what is probably bad ideas 😅 I’m surprised at 40mins out of a tank of gas wouldn’t have thought be anywhere near that
 
Now this is giving me what is probably bad ideas 😅 I’m surprised at 40mins out of a tank of gas wouldn’t have thought be anywhere near that
Gassers are really good on fuel compared to Nitro powered cars. Obviously, it depends on how they're driven, but you may even get 45 minutes out of a Baja.

Probably a good idea to charge your Rx packs in-between tanks. But a 4500mah pack should last a good hour or more, depending on servo choice.

But 45 minutes at a time is much, much longer than people realise. 😎
 
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Rear wing angle needs slight adjustment, as the cage has slightly different angles.

Hopefully get to drive it later today. I'm really looking forward to it! 🤩😁
 
Now over-winter storage, with an empty tank can sometimes lead to difficulty in starting up the engine.

I cheat, using a syringe 💉 with 2.5ml 2 stroke fuel at a time, to prime the engine. It's hard to get fuel to the carb if there is air in the lines, even when using the primer bulb.

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Split cage is really helpful.

Couple of pulls later - and the engine is alive. 🤩

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Spot the bubble!

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Steering works a treat! Very impressed. 😎💪
 
New shocks on the way.....

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VVC shocks are some of the few orange bits left on the Baja, so I may retain the Orange socks in homage to the SS original ones.

I was running Phatdad shafts, so they are still a perfectly useable, decent set of shocks. But they aren't 20mm big bores with 8mm shafts. 😅
 
Here's the state of the old manifold.

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Removal of the manifold bolts requires decent torque and the right tools. Your regular Hudy type precision drivers are not the right tools for this job.
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Having skilfully and masterfully proved to myself I could replace the entire exhaust system without removing the cage, I then proceeded to remove the cage to fit new shocks! 🤣🤭

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I won't be missing this clamp, that's for sure! 😝 It was obviously designed by sadists.
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Loving the new clamp. Nobody told me about this! 🤩👌
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New exhaust fitted. 👍 Now time to fit the new shocks. Minor modification required to the alloy/carbon rear shock mounts. 😬
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Rears are on! Now onto the fronts...
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Beautifully over engineered! Sadly, these are massively over-sprung at the rear for my light weight Baja, so new lighter rate, progressive springs will be sourced from IRC.

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Standing taller, the Baja sports it's new bits. Front lower arms are on their way. Lower rate springs also to follow and then we should be about done. For now...😅
 
Here's the state of the old manifold.

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Removal of the manifold bolts requires decent torque and the right tools. Your regular Hudy type precision drivers are not the right tools for this job.
View attachment 8116
Having skilfully and masterfully proved to myself I could replace the entire exhaust system without removing the cage, I then proceeded to remove the cage to fit new shocks! 🤣🤭

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I won't be missing this clamp, that's for sure! 😝 It was obviously designed by sadists.
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Loving the new clamp. Nobody told me about this! 🤩👌
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New exhaust fitted. 👍 Now time to fit the new shocks. Minor modification required to the alloy/carbon rear shock mounts. 😬
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Rears are on! Now onto the fronts...
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Beautifully over engineered! Sadly, these are massively over-sprung at the rear for my light weight Baja, so new lighter rate, progressive springs will be sourced from IRC.

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Standing taller, the Baja sports its new bits. Front lower arms are on their way. Lower rate springs also to follow and then we should be about done. For now...😅
Nitro/gassers not really my thing but how nice this setup looks has me drooling Elliot boots sworkz that exhaust looks beautiful & buggy looks badass too

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