Chainring as bashguard?

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billium

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Interested in Amflo but worried about bash protection as I regularly encounter fallen trees on Bridlepaths that I ride over, hitting the bashguard on my Whyte E160 – no big deal, that’s what it is there for.

But unlike the majority of EMTB's, Amflo’s chainring sticks out so much it IS the bashguard!

What happens when you hit a tree or rock with the chain+chainring?

Is it strong enough to shake it off or are you risking damage?
 
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Well no, a chain ring/ chain can not accept a hit and it's a major shortcoming of the DJI. Even light hits will make your chain kink and not articulate freely.

E13 is supposed to have a bashguard for the Avinox motor available now.
 
@billium Google "Blackspire Defender Bash guard" and see what you think. You might have to page down a bit to get past the paid for ads to see the range available. They make bolt on bash guards in a range of sizes to fit various rings.

They are sometimes called bash ring guard, so try both.
 
Hmm, couldn't find either of those bash guards, anyone that actually owns one?
 
Unfortunately, this product seems to be gone before it even launched.

www.tradeinn.com

E-thirteen Turbocharger Race 104BCD DJI Avinox kettenblatt, Silber | Bikeinn

Hol dir E-thirteen Turbocharger Race 104BCD DJI Avinox in Silber für 105.99 €. Perfekt für radfahren mit schneller Lieferung. Kaufe Kettenblätter bei Bikeinn!
www.tradeinn.com www.tradeinn.com

Products like this have existed since the 1980s for bikes, but apparently they rub the DJI motor or something.

It's a MAJOR shortcoming of the DJI power unit and it's wild to me that Forbidden for instance, didn't just mold their frames with the ISO5 standard (I think that's what it's called) just like every pedal bike made for anything above XC riding has. Maybe it just doesn't fit.

It appears, that Crestline was the only one to even consider this issue and frankly I'm not convinced they went far enough.

It's a big CHECKMARK in the Bosch column for sure.
 
My Whyte has an angled Bosch CX motor so the lower front of the chainring is not protected. Their solution was simple - make the plastic battery access cover bigger than it needs to be with 4cm ribs so it extends just beyond the chainring. Side benefit is it can be used for small item storage too. Amflo should consider similar which would add a little weight with perhaps enough room to add a multitool.
 
dcxs said:
Hmm, couldn't find either of those bash guards, anyone that actually owns one?
Click to expand...
Did you mean the Blackspire Defender that I mentioned? I used Google and also Norton and I got loads of hits.
By "couldn't find" did you mean one made for your bike? If so, I'm not surprised, you need to be a bit more creative. Look for one that will fit your ring and you might have better luck. (y)

I'm fairly sure that I have a Blackspire Defender bash guard in my stash of bike parts that are no longer used. I have just sorted out my garage so it may be lost forever. I'll have a look for it, but not right now it's chucking it down at the mo. :)
 
Just found these close ups of the Blackspire Defender bash guard that I used to use. I might still have it, but the nature of the photos suggests to me that I was selling it so it may be gone already.

I seem to recall that those washers were the spacers I used to stop the chain from rubbing on the guard. So, it was never a perfect fit. As you can see from the second pic, the guard proved its worth.

Edit: I managed to fit and remove it without having to remove the crank. That was a much easier job on a manual bike, but even so, not having to remove the crank was preferable.

Second Edit: It never occurred to me when I was using it, but I fitted it on the inside of the chainring. Sat here, out of sight of my bike, why won't it do an equally good job fitted on the outside?

Bash 1.jpg


Bash 2.jpg
 
Some people have tried to mount those traditional chain ring bash guards, but apparently, they rub on the DJI motor casing or something.

I'd have to get off and walk 3-4x per ride with an exposed chain ring, and really more than that if I didn't want to truly risk it. It's quite the deal killer for me.
 
Suns_PSD said:
Some people have tried to mount those traditional chain ring bash guards, but apparently, they rub on the DJI motor casing or something.

I'd have to get off and walk 3-4x per ride with an exposed chain ring, and really more than that if I didn't want to truly risk it. It's quite the deal killer for me.
Click to expand...
when i look at my amflow i think the cranks will rub against the chainring mount if the chainring guard is mounted :/
 
Hey folks,
Chris from e*thirteen here. As @Suns_PSD mentioned, we do have the New Turbocharger guide available and it was specifically designed to protect chainrings on a few of the low-power bikes where the ring is less protected from the motor casing/housing. Bosch and EP8 motors which have mounting points for an upper only chain guide, also have the option to use a custom upper slider that integrates nicely with the spider mounted bashguard. You can see this on our website if you click thru the image carosel here: Turbocharger Race 104BCD e*spec Spider, Bashguard and Chainring
We did sell out of some of the configs pretty quickly once they went live, but we've got more on the way and you can enter your email on the page if you want to be notified when they come back in stock.
Note that we assure fitment with these motors + Turbochager + e*thirteen cranks but we cannot assure fitment the Turbocharger and non-e*thirteen cranks. If you have compatibility questions, feel free to reach out to us via our support page and we can assist.
Cheers
 
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Anyone with thoughts on the Hope Chainring Guard ?

1756866544257.png


This is my Amflow chainring. Obviously the chain guide may need to go.

1756866618904.png


BTW. My goal is to protect the chain, not the chainring. I bought sacrificial alloy chainrings. But I'm not bending or damaging the chainrings. Just tearing up the top the chain.
 
Anyway. I bought the Aliexpress protector months ago, but didn't fit it. But after seeing the Hope Chainring Guard, I thought I'd try. I was concerned about rubbing, but after fitting, the clearances are perfect, and there is no impact on your chain line.
1756875605369.png



I've put back the steel SRAM 34T chainring. And I've had to move the chain guide higher, where it's probably not doing a lot.
1756876415796.png

1756875917982.png


You can see the clearances are fine. But I used longer chainring bolts.
1756876092689.png


1756876345593.png
 
What about one of those half bash rings that bolt on to the cranks?
 
As I've used the Motsuv chainrings on my last 3 EMTBs and they have performed perfectly. I ordered one of these as well. The only issue I see is it will need to mount on the outside of the spider, to have the same chainline.

But I'll give it a go as well.


1756881362366.png
 
Zero cool said:
I wasn’t sure if someone made an ebike version to fit your bolt pattern.
Click to expand...
You need the guard to fully enclose all the chainring, as when you flatten the cranks, the chainring alignment could be anywhere. This is also why you cannot use an oval chainring on an EMTB. The alignment won't remain in the right spot for the crank position.
 
e*thirteen Components said:
Hey folks,
Chris from e*thirteen here. As @Suns_PSD mentioned, we do have the New Turbocharger guide available and it was specifically designed to protect chainrings on a few of the low-power bikes where the ring is less protected from the motor casing/housing. Bosch and EP8 motors which have mounting points for an upper only chain guide, also have the option to use a custom upper slider that integrates nicely with the spider mounted bashguard. You can see this on our website if you click thru the image carosel here: Turbocharger Race 104BCD e*spec Spider, Bashguard and Chainring
We did sell out of some of the configs pretty quickly once they went live, but we've got more on the way and you can enter your email on the page if you want to be notified when they come back in stock.
Note that we assure fitment with these motors + Turbochager + e*thirteen cranks but we cannot assure fitment the Turbocharger and non-e*thirteen cranks. If you have compatibility questions, feel free to reach out to us via our support page and we can assist.
Cheers
Click to expand...

How do you get chainring protection on the DJI Avinox motor? Searched and can't find anything.

Guys, like everyone else, I've pretty stoked on the new E-Druid and the Mith. But I know my terrain and frankly skill level and would not be able to complete a single ride without a bash guard. Since the DJI motor has great ground clearance, it fully leaves the chain ring exposed. So I just...
www.emtbforums.com www.emtbforums.com
 
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