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Author Topic: Zero SR/F -> DSR/X Belt Conversion  (Read 595 times)

princec

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Zero SR/F -> DSR/X Belt Conversion
« on: October 04, 2024, 07:05:44 PM »

...appears to be a thing, and I've found the original post here: https://www.facebook.com/groups/zmcowners/posts/this-evening-i-installed-the-dsrx-transmission-on-my-srs-and-it-workseverything-/7742029812532826/

So I'm going to attempt the same mod myself and get the parts from EEMC.

Copied here for posterity:
Quote
Everything fits perfectly, no tinkering or fiddling, it's as if it was designed for...
I was a little afraid that the alignment wouldn't be the same but ultimately it's perfect, there is 1 to 2 mm of play between the swingarm and the rear sprocket.

On the engine pulley side it's very wide, no problem.

For disassembly I installed an old belt and I heated the engine pulley screw with a heat gun for 6 minutes while rotating the wheel to avoid melting the belt (precaution may be useless but I preferred not to  risk).  I then blocked the wheel with a wooden block and the screw came out very easily (be careful with your hands, it's hot!).  I then heated the center of the pulley again for 6 minutes to extract it. I slid a tool with a mallet between the swinging arm and the pulley very slowly so that it came out, thanks to the heat it came out very easily.

The upper belt guard is very close to the belt, I will probably deform it with a heat gun to prevent it from rubbing.
I also bought the lower belt guard for the DSR/X, it fits perfectly but the holes to attach it do not exist.  I'm still hesitant to create them or find another way to install it.  Driving very often in the rain, I think it's a big plus to limit wear.

Finally the transmission ratio is changed, and in the very small test I did I didn't feel any noticeable difference. No error message displayed. Regarding speed, it is now closer to reality than before! The only downside is that it is now very slightly underestimated.  Before, at 50 km/h on the cruise control I was at 47 km/h on the GPS. Now I'm at 51 km/h GPS.  Personally it suits me perfectly.

Cas :)
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princec

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Re: Zero SR/F -> DSR/X Belt Conversion
« Reply #1 on: October 05, 2024, 12:16:05 AM »

Total cost of parts: £671.72 inc VAT.

Cas :)
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zeronimbus

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Re: Zero SR/F -> DSR/X Belt Conversion
« Reply #2 on: October 05, 2024, 11:46:56 AM »

hi, I hesitated to do the same recently, after having blown 4 belts, but I didn't think the plug and play kit
but I was hoping to put the dsrX chain kit instead, but it wasn't available on the Dutch site.
I put the same thing back and the new pulley had changed reference.
since then I'm more confident, I've already covered more than 10,000 kms, and nothing to report.
be careful that the belt is as much as possible on the left of the crown (1mm), and well tensioned mini 62 HZ- maxi 82Hz
but thanks for the feedback.
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sébastien

honda prelude 1994
bmw 1200RT 2006
Zéro sr/s full options 2021
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