OZM29C Posted March 18, 2020 Share Posted March 18, 2020 In the past I had feedback stating that the unmodified LAR track sprocket was responsible for 'shaving' metal from the LAR track guides. @Rob Wrecommended that I modify the LAR sprockets to prevent this problem. Before starting, frustratingly I had to further bore the sprockets as they initially would not fit onto my hubs. Quote Link to comment Share on other sites More sharing options...
OZM29C Posted March 18, 2020 Author Share Posted March 18, 2020 When that was done I carried the recommended modifications to the sprockets. Quote Link to comment Share on other sites More sharing options...
OZM29C Posted March 18, 2020 Author Share Posted March 18, 2020 To again improve how the track guides feed into the LAR sprocket, there are two schools of thought on how this should be done. I represented the 'shaving' problem to LAR and their advice was to fit a set of sprocket off set spacer plates to add extra room for the track guide. I opted for the second option where I have removed the track sprocket guide plates from the idler wheels (that will be bolted onto the LAR sprocket), machined the guide plates flat and will then fit them as shown in the last photo. BTW the last photo clearly shows an unmodified LAR sprocket. I hope that my LAR tracks will not prematurely wear in way of the track guides with these modifications. Quote Link to comment Share on other sites More sharing options...
M29 Posted March 18, 2020 Share Posted March 18, 2020 Interesting problem. I bought some Acurtite sprockets. They came with chamferred edges. I put them on the same way the front idler was installed with bolts only through the hub. I did not install bolts around the upper edge of the ring although the acurite sprocket was drilled and tapped for the bolts. I have to take the tracks off again anyway so will install the upper bolts later.I will watch the wear on the guide for sure and am glad you posted these pictures Dan Quote Link to comment Share on other sites More sharing options...
M29C3284 Posted March 21, 2020 Share Posted March 21, 2020 Will the bands be riding on the rubber part of the wheel with this solution? The sprocket assembly looks a bit wide in the picture, with the sprocket being flat and not countersunk on one side like the original.. Quote Link to comment Share on other sites More sharing options...
OZM29C Posted March 23, 2020 Author Share Posted March 23, 2020 No problem with the LAR track. Quote Link to comment Share on other sites More sharing options...
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