Hepco and Becker C-Bow Frames with Aftermarket Rear Shock WARNING! - Triumph Bobber Forum
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post #1 of 20 (permalink) Old 05-03-2019, 03:38 AM Thread Starter
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Exclamation Hepco and Becker C-Bow Frames with Aftermarket Rear Shock WARNING!

As the stock Bobber rear shock is rock hard I upgraded it to a fully adjustable Matris unit.
I also fitted the Hepco and Becker C-Bow frames so that I could add luggage. And there lies the problem.
Because the Matris unit actually behaves like a shock absorber it allows more travel of the rear wheel and the design of the C-bow frames do not account for this, so the swinging arm crashes into them on both sides when riding.
The Matris unit is set up exactly according to the manufacturers specification, and Hepco and Becker have agreed that the C-Bow frames are installed correctly.
I have entered into a dispute with Hepco and Becker over this issue and they eventually offered to redesign the C-Bow frames for my bike, at no cost to me, so that they do not obstruct the movement of the swinging arm. However they are adamant that they will not compensate me for the damage that has been caused to the swinging arm by their product, stating that the frames are designed for the stock shock only (a short-sighted view in my opinion). Nowhere in Hepco and Beckers documentation, nor on their website, do they state that the frames are not compatible with an alternative rear shock.

In this post, I have summarised the many communications between myself and Hepco and Becker over the last few weeks.
I have also spoken to other industry specialists who agree that the design of the C-Bow frames for use only with the stock shock is ridiculous.

I would be very interested to hear from anyone who has fitted C-Bow frames and has had the same issue running with the stock shock.
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post #2 of 20 (permalink) Old 05-03-2019, 04:23 AM
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Very annoying to read about such events.
But important to share!
So, thanks for sharing this info with us.
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post #3 of 20 (permalink) Old 05-03-2019, 08:30 AM
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I suspect that H&B will argue that they canít design their product for every aftermarket modification scenario. And therefore itís designed for a stock bike, and if you decide to fit it to a modified bike then you do so at your own risk..

Seems a reasonable stance to me
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post #4 of 20 (permalink) Old 05-03-2019, 09:01 AM
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With hundreds of aftermarket parts for these bikes they cannot test every application. Unfortunately you were the Beta tested on this one!
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post #5 of 20 (permalink) Old 05-03-2019, 09:10 AM
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Wow! Glad to hear they're going to redesign their mount, and hopefully it isn't just for you, but for all Bobbers moving forward. What are we talking about here....maybe a 1/4" (8mm) shift outward to clear the swingarm? I don't understand how they think this isn't a problem for the factory shock, but is for an aftermarket one. The travel isn't much longer (if at all) with aftermarket, and I bet those of us that are bigger guys cause more flex of the factory shock that the lighter guys.

Each one matters.
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post #6 of 20 (permalink) Old 05-03-2019, 09:16 AM Thread Starter
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Enoch,
I can't say that I've not heard that before, but I didn't start this thread to receive statements of opinion.
I've been arguing the problem for over three weeks, and I have sought industry advice from other parties.
The fact is that H&B have allowed 25mm of swing arm travel before it smacks into the pannier frames, and that measurement is taken without a rider. If they had allowed for 15mm additional lateral clearance there would have been no issues.
The debate is with regards to the safety aspect of placing a restriction on the amount of travel that is available to the rear wheel and swing arm. The design of their rack simply lacks common sense.
After all, Triumph themselves offer the Fox shock as an alternative, so in my mind, at least, the possibility that any shock could be installed should have been considered.
I'll have to wait and see, but it wouldn't surprise me if someone has had the same problem with the stock shock. I weigh 14st/90kg/200lb, so not particularly heavy; a rider with additional weight might be a different story.
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post #7 of 20 (permalink) Old 05-03-2019, 09:18 AM Thread Starter
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Thank you ysoslo, my feelings exactly.
I've covered your questions in the reply I just sent to Enoch.
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post #8 of 20 (permalink) Old 05-03-2019, 12:29 PM
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Unfortunately Johnny. This is the internet, so whether you ask for them or not, you will get opinions. Some of which you may not like or agree with.
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post #9 of 20 (permalink) Old 05-03-2019, 12:34 PM
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I'm with Enoch here. We modify our bikes at our own risk.
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post #10 of 20 (permalink) Old 05-03-2019, 12:46 PM
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Thanks for sharing this Johnny,

Some good points of views shared here, looking at various angles. At your cost we have all learned something.

Appreciate you taking the time to share this issue.

Cheerio,

Roy
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