Using a steering quickener for shaft drive

Clutches, Chain & Belt Drives

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southysuper
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Using a steering quickener for shaft drive

Post by southysuper » Sat May 25, 2019 6:11 am

Hello all,
I’ve had an idea I wanted to float here. I have a dnepr k750 and I’m thinking of using a 1.5 or 2.0 :1 steering quickener to up my rpm to the shaft drive. I’m guessing I’ll need to fit a small oil reservoir like maybe a handle bar mount master cylinder attached to it to keep it lubed and cooled. Thoughts?

Example: https://www.speedwaymotors.com/shop/ste ... -570-16533

My thought is the gears inside would offer some pump action like an old air cooled vw oil pump

Again thoughts welcome

pietenpol2002
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Re: Using a steering quickener for shaft drive

Post by pietenpol2002 » Tue May 28, 2019 2:46 pm

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I like how you're thinking with regard to managing the Ural final drive ratios. However, I fear the steering quickener would not be up to the torque you'd be putting through it. I didn't see any torque ratings listed for the quickeners. Just assuming they'd be designed for the kind of torque one could exert with two arms. And any engine you might choose will well exceed that figure I might think. But then, I'm also not an engineer. Also, It would appear they use a simple bronze bushing at the input and output sides. And they too might not be up to the sustained loads you'd be putting through them.

The link below was posted on here some time ago. And if you haven't seen it as yet, it's an interesting study in Ural and Dnepr intermediary drives that might be of interest for your planned application.

https://vk.com/topic-60344065_30250678
Ron
Goshen, IN USA

mark_in_manchester
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Re: Using a steering quickener for shaft drive

Post by mark_in_manchester » Tue May 28, 2019 3:06 pm

That's an interesting set of links - not seen those before.

I thought about this when building mine - I'd use a chain drive I think, but it (and the bevel gears to go with it) would be a lot of work to set up.

Or - mount the engine cross ways with the gearbox on the end - wider than a Honda 6 :)

southysuper
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Re: Using a steering quickener for shaft drive

Post by southysuper » Thu May 30, 2019 4:36 am

Hmm that was an interesting link for intermediary and final drives. It actually has me thinking that perhaps the one pic was a final drive direct connected to the gearbox to output a chain drive. Perhaps a different final drive from a bmw or Honda (different ratio options) . If a quick change differential were not so large (and expensive) perhaps it might work as well. That might add some weight and length to the bike as well. I’m probably going to ditch the hockey puck coupler for pto /dc motor / generator / power head coupler if not a cv joint. Mine looks like crap and will probably snap if you look at it wrongly. I was in tsc early and felt imaginative

mark_in_manchester
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Re: Using a steering quickener for shaft drive

Post by mark_in_manchester » Sun Jun 02, 2019 6:50 am

In my experience (20 years with Urals - what a dickhead I am :) ) old, sh*t looking rubber donuts can last a long long time, but new Chinese soft ones (which ought to be better, from a shock absorber point of view) can chew up in a day - really, had it happen. I met someone in Poland who races Ural and Dnepr outfits who uses drive-line rubber things out of a Fiat car - probably Fiat 125 as this is like Lada / FSO - and this is another approach I ought to look at one day.

womble
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Re: Using a steering quickener for shaft drive

Post by womble » Sat Nov 02, 2019 11:32 am

Hi Mark, I would say, there not upto the power/torque, or the rpm etc, would probably wear out in about a mile if it didnt brake, I have a couple of car gearboxes here if you fancy an explore inside, see what gears we could pull out? there going to take the load, would be fine , with a bit of splash lube, me thinks. food for thought :)
ps, only problem with 2 gears, it will will change direction of rotation, need 3 .................

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