Hi All, I have been watching this list for a while as I was looking for a KR-1 to buy. Well, I have finally bought a previously completed but never flown project. I now need to modify it to swap out the original 1600cc motor for my 2100D - actually the builder/previous owner is doing this and other work for me under my guidance and approval. I thought I would publish the progress here in case it helps anyone else, or others here might be able to offer their thoughts as the modification proceeds.
The first challenges encountered when comparing engines are: 1. The Remaster intake system is on top of the cylinders, whereas the original custom intake was displaced laterally outside the cylinders so the cowling does not fit. The builder has suggested and I have agreed that he modify the Remaster intake positioning to the same place as the 1600 motor. 2. The original mount (for the 1600 engine) can be modified slightly for the revised mounting geometry of the 2100d but the space between firewall and the remaster case is slightly too small for the Dual magneto setup. I had been strongly considering swapping the magnetos for a SDS Coil Pack Ignition system anyhow, so this has just made that decision easier. I will of course need a battery backup system for a non-magneto system. I will design and install that myself. 3. The unfared stub exhausts of the 1600 will be replaced by a more aerodynamic Revmaster exhaust system, but this will entail modifying the lower cowling to hose this arrangement internally. I will speak to Revmaster to see which of their exhaust systems (Q2, or KR-2 etc) is the best candidate for this application. 4. The Remaster Prop hub sits 3.5-4 inches further forward than the original 1600 engine hub, so the cowling will be modified to incorporate this too. The builder has also agreed to lower the seat base and recline the seat back, strengthening the structure for a rollover hoop/headrest, and shoulder harness attachment too. One day into the project and lots of challenges encountered. Let’s hope this isn’t a sign… Tristan _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
