Fitting front Hebie Chainglider 38t

[daviddd55]

My Thorn Raven has a steel chainring cover outboard of the (38t) ring itself - this came as standard in 2007 (and 100,000+ miles ago) when I bought the bike. If I want to fit the Chainglider I'll have to remove this covering ring so that the chain (only) fits inside (as I understand it). But the present 5 chainring bolts are too long without the cover ring and won't tighten, so it seems I need a new set of 5 smaller bolts. Does anyone have an idea of the spec / size of bolt needed for this? There seems to be a large array of possibilities.

[Andyb1]

You may need to fit a thinner chainring as well.  Hebie say max thickness should be 3mm but I have been using 4mm wide chainwheels on 2 bikes with no problems.

[martinf]

You may need to fit a thinner chainring as well.  Hebie say max thickness should be 3mm but I have been using 4mm wide chainwheels on 2 bikes with no problems.

Same here.

Since 2011 I have been using a fairly thick TA chainring for 1/8" chain under a ChainGlider on my old utility since 2011. It rubbed a bit at first but soon wore in.

For the chainring bolts, you can either buy a set of shorter bolts, generally designed for use with single chainrings, or you might be able to put the right diameter and number of washers onto the existing bolts to make up the thickness of the chainring cover. I have occasionally done the latter, using stainless steel washers. Aluminium chainring spacers could also work.   

[daviddd55]

Thnx for responses; I'll try spacers first.
Is it possible to fit the front Chainglider without the rear?

[Matt2matt2002]

Thnx for responses; I'll try spacers first.
Is it possible to fit the front Chainglider without the rear?

I'm pretty sure the front and back clip together.

[JohnR]

Thnx for responses; I'll try spacers first.
Is it possible to fit the front Chainglider without the rear?

There's the open Chainglider https://www.sjscycles.co.uk/chainsets/hebie-chainglider-open-359-for-38t-chainring/.