THis is going to be short and sweet. A picture says a thousand words, so here are 4000 words to tell the story.

If you wanted to you could enlarge the hole and use a bushing or bearings for the new gear axle. I plan on using a brass bushing when it is all completed.

Simple eh!

Thanks for posting!

All looks simple enough, but a few questions, you need to have special pinion gear with your motor, what size is that??! Where did you get that did it come with those motors and where do you get those?

The Blitz

Awesome, how about some part numbers?

All the pinion gears you see are Losi pinion gears. I will supply part numbers for everyone once I track them down. I threw away the packaging, so I will have to source out the parts again to get the numbers. The good thing about this is that these all fit together with no machining or fiddling around. You remove the brass spreader, and insert all the gears and run the axle through the hole that is already there, Everything meshes and you get the lower gear ratio.

I had some old COX slot car spur gears, these might be hard to find. However , "Slot-it" is a modern slot car parts manufacturer, and I am pretty sure they could be a source for these spur gears.

Give me a couple of days to get all the part numbers and I will post them so everyone can go out and do this easy mod for themselves.

Nice one YHR [:-] It's impressed me no end
Alan

Here is some more information on the gears used for this conversion.

Top job YHR, looked in this myself but was unable to locate gears etc. If you haven't done this already, might I suggest you put 2 flats on the shaft to lock the gears in place & if there is room you could use 2 more small gears with teeth removed as locking collars on the outside of the gearbox thus holding GB housing together?

just did your conversion using all henlong gears very simple then move the motor pinion all the way back and your in buisness

here are a few more pics with the bushing in place and the support stut reinstalled

i added pics of the second gearbox converted

for those with the metal gearboxes this is easy to do as you already have the one gear you need from your old plastic box and it will perform perfectly even though it is plastic as there will be no stress at all on this gear the stress is further up the gear train you need a drill and a 15/64 drill to put the bushings in and a 9/64 drill to put the cross rode back in

when drilling the gear box housing play it smart remove everything from the housing bolt the 2 haves together and drill the ho;es all at once to maintaine the squaeness of the holes

Excellent, very cool that is even easier, thanks Bubbajoexx!

The Blitz

This is not my conversion. Someone else posted the original idea some time OK. I just brought it to light, as I had be asked about it. I think the person who originally posted, did as you have with the extra Heng Long gear. Regardless it is a great way to get the gear ratio more inline for better speed and power.

Hi guys I think this is a great post as it looks like a low cost fix for all those metal gearboxes out there ( says he laughingly having spent £30 odd quid on a set of 3 to 1 reduction gearboxes a while ago [:@] ). Just one question gent's any chance of a couple of measurements so I can drill the new shaft hole correctely. For instance how far up ( in MM ) from the base and how far in from the edge ( in MM ) to the centre of the shaft should I be looking to drill the shaft hole. I know both solutions will be diffrent measurments but it will give me a ballpark idea of where to start. Many thanks in advance to both of you
Alan

Hi Guys there is one problem with this mod you will have to cross drill the final drive gear and pin it because its been move all the way along the splines if you dont it wont last long before the gear is turning on the shaft all the extra torque will strip the splines inside the gear been there done it had to pin gear after about 4 hours of heavy going keep this in mind but it does give you a 3:1 reduction saves ££££ and it dosnt take up any more room .if you could get hold of the final drive gear from the stug right hand gearbox you wouldnt have a problem its differant to all other final drives.


regards pete

the best way I have found too through drill some thing like this is to make a spacer the inner dimention of the object being drilled and clamp it in place. The spacer will act as a drill guid so your new holes are in alingnment. The spacer should be hard but not oo hard. A good block of oak or hard wood should work. You cab pre -drill the spacer as not too over heat the bit.

using the stock plastic gear make the swap a little cheeper you dont need to buy gears and most of us who have changed over to the metal gearboxes have the old plastics kikin around I read you tread and figured there has to be a cheeper way to go so I posted the above pics to help every one out your change over is good but finding gears is not that easy as most hoddy shops wont look for a gear if you dont have a part number so i use what i have and make it work

well just did a metal gearbox and the conversion is working good have a vid iam uploading now so here is what i have done

first disassemble the gear box

then drill the holefor the bushings 6mm or 15/64 at the location marked in red

step 2
using a small vise press the pinion gear all the way back on the motor shaft as in the pic

step 3
now that the pinion is reset to the new position you will need to make the motor ajustable by moveing the motor hole upward with a file and sloting the motor mount holes up i/8of an inchas in the pic for the low mount motor the high mount motor you move down 1/8 of an inch

step 4
prepare the new gear for instalation by removing 3/16 from the back if the gear then press the shaft forwad the same amount

now place the new gear in the motor side of the housing mount the motor ans set the pinion depth to the gear
now press the driven gear of the output shaft and revese it on the shaft 1/8 of the spline should be showing when done and make sure the front bushing is in place then reassemble the gearbox and your done

http://www.youtube.com/watch?v=4POZPbaTokM the running gearbox noisy no lube in it yet

Thanks for the update on the gearboxes most enlightining and definitley doable. Will have to have a go next week. Have you also added bearings to your boxes as well bubbajoexx ?. And has it made a difference to the rolling resistance. All the best for now
Alan [:-]

yes when the main shaft is apart i install 9mmX5mm shouldered bearins be very carefull when pressing them over the spline the brake easy I use a vise with a steel ram to press them on

Thanks for that Bubbajoexx
Alan

I am posting a new vid as soon as it is uploaded to youtube clearer picture and fully lubed 0


http://www.youtube.com/watch?v=AKYqHE268ck

Not to be picky...

But those are still bushings. Bearings have ball bearings in them. And the brass spray that could be seen before you soldered them in showed that they were already wearing down. Makes me want to rethink my using the stock ones, and go to Tamiya ones.