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HPI Jumpshot Speed Machine


tomr

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69t Spur is definitely the smallest you can fit with the slipper setup. Still have almost maximum adjustment to go bigger on the pinion, 51t is the biggest I’ve found and should be more than enough . 
Whilst I was messing about I found that the lay shaft is 5mm with flats on either side so I have the option to fit 5mm pinions for some crazy gear ratios 🤯

 


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4 hours ago, Jack Reacher said:

I am starting to wonder if you are gonna get this to 100 mate

Maybe my friend, maybe...

 

Ive just finished work in the “research and development centre” aka the kitchen/dining room and knocked up some battery tray/holders so I can run  2 x 2s 5500mah 50c packs 😁

Have to say this truck lends itself well to any modifying that I come up with .

 

 


 


 

 

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1 minute ago, Jack Reacher said:

mate i love what you have done for the lipo`s that is ace mate, series or parallel 2s or 4s

Series for some 4s power .

I’ll run it on the new gearing with 3s first as I’m interested to know what it’ll do 

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