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#1 |
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Guest
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Anyone use or know someone that uses one of these ?
Interested to know some of the pro's & cons of such a bike. Suggestions of webs sites that feature reviews, comment or trip reports using the above also most welcome Cheers Ian |
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#2 |
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Guest
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> Anyone use or know someone that uses one of these ? Interested to
> know some of the pro's & cons of such a bike. Suggestions of webs > sites that feature reviews, comment or trip reports using the above > also most welcome I'll try to make general comments, not being a Sachs owner, but as someone 'reasonably satisfied' with Rotary's DIY petrol engine. From the looks of web-searching, the two engines appear very simular. Try not to do much heavy riding for the first 700 kms or so while the engine is being run-in, and you gain experience fixing problems as they come. Replacing a flat rear wheel is a chore, at least in comparison to other bikes with quick-release hubs.. "Mr Tuffy"-type tire liners are a _must_. On long-ride days in hot weather, I've managed to have the rear tire tube /melt/ on me-- so good tubes are an idea, too. Often, breaking the chain will be necessary to get enough access to the wheel and/or motor. Note that thanks to the engine, it weighs over twice as much as a typical bike: 30 kgs. Don't expect great acceleration out of the engine, however it does keep its speed well. When my engine was fully run-in (about 1400 kms), it could manage an extended-period crusing speed of 27-29 km/h on flats. (The Rotary clutch, at least, hates being pushed at 30 or above. Of course freewheeling faster than that is fine.) I've managed about 200 kms per day of touring-type travel on a fully-loaded bike camping tour. (That was pushing human endurance a little, though. I'm _glad_ I bought a decent seat. ![]() Don't ever use petrol-station 2-stroke. Thanks to the advice of a local Go-Kart/Rotary mechanic, I used "Repsol" 2T Standard as the 1:50 fuel oil for the first 1000 kilometres. Afterwards, we moved to using Repsol's 2T "Sintetico"/Synthetic in a 1:60-70. After 3000 kms, the engine runs _smooth_, starts are usually only one or two pulls, and I've not noticed a single cylinder-related problem. Fuel consumption is no where near the proported 125 kms/litre as Rotary claims. I've only seen about 70 kms/litre. I always carry a 1 litre water bottle with emergency fuel. It's the underslung bottle in this picture: http://hunter.apana.org.au/~cjb/Ima...ttery_ubolt.jpg Starter rip-cords break. As a replacement, I've been able to use regular lawn-mower cord from a hardware store. The fix can be done 'on the side of the road' if you have the tools. If the Sachs mechanism is anything like the Rotary, be _very_ careful the spring doesn't jump out-- or you'll spend 2 hours trying to rewind the thing... It's mostly the older guys, often European immigrants, who will come up to you and ask about the bike. P-licence-platers seemingly harass you less from a normal cyclist experience. And everyone uses the word "cheat!" :-) Since November, I've done about 3000 kms in commuting, touring, and camping. A bit over a month ago I went on a Newcastle->Taree-> Glouster->Armidale->Glouster->Newcastle ride. All up, it was 5 days of riding time, 40 hours of bum-on-seat, and covered about 1100 kms. I even managed to bump into aus.bike old-timer Linze while in Armidale. I did keep a journal and had a digital camera with me... I've just been slack writing up a report. ![]() -- Chris |
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#3 |
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Guest
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Hey Chris
Thanks for details msg. I'll take your points on-board. Keep on cheating ! Cheers Ian "Chris Baird" <abuse@brushtail.apana.org.au> wrote in message news:uf1xmqmzj4.fsf@brushtail.apana.org.au... > > Anyone use or know someone that uses one of these ? Interested to > > know some of the pro's & cons of such a bike. Suggestions of webs > > sites that feature reviews, comment or trip reports using the above > > also most welcome > > I'll try to make general comments, not being a Sachs owner, but as > someone 'reasonably satisfied' with Rotary's DIY petrol engine. From > the looks of web-searching, the two engines appear very simular. > > Try not to do much heavy riding for the first 700 kms or so while the > engine is being run-in, and you gain experience fixing problems as > they come. > > Replacing a flat rear wheel is a chore, at least in comparison to > other bikes with quick-release hubs.. "Mr Tuffy"-type tire liners are > a _must_. On long-ride days in hot weather, I've managed to have the > rear tire tube /melt/ on me-- so good tubes are an idea, too. Often, > breaking the chain will be necessary to get enough access to the wheel > and/or motor. > > Note that thanks to the engine, it weighs over twice as much as a > typical bike: 30 kgs. > > Don't expect great acceleration out of the engine, however it does > keep its speed well. When my engine was fully run-in (about 1400 kms), > it could manage an extended-period crusing speed of 27-29 km/h on > flats. (The Rotary clutch, at least, hates being pushed at 30 or > above. Of course freewheeling faster than that is fine.) > > I've managed about 200 kms per day of touring-type travel on a > fully-loaded bike camping tour. (That was pushing human endurance a > little, though. I'm _glad_ I bought a decent seat. ![]() > > Don't ever use petrol-station 2-stroke. Thanks to the advice of a > local Go-Kart/Rotary mechanic, I used "Repsol" 2T Standard as the 1:50 > fuel oil for the first 1000 kilometres. Afterwards, we moved to using > Repsol's 2T "Sintetico"/Synthetic in a 1:60-70. After 3000 kms, the > engine runs _smooth_, starts are usually only one or two pulls, and > I've not noticed a single cylinder-related problem. > > Fuel consumption is no where near the proported 125 kms/litre as > Rotary claims. I've only seen about 70 kms/litre. > > I always carry a 1 litre water bottle with emergency fuel. It's the > underslung bottle in this picture: > http://hunter.apana.org.au/~cjb/Ima...ttery_ubolt.jpg > > Starter rip-cords break. As a replacement, I've been able to use > regular lawn-mower cord from a hardware store. The fix can be done 'on > the side of the road' if you have the tools. If the Sachs mechanism is > anything like the Rotary, be _very_ careful the spring doesn't jump > out-- or you'll spend 2 hours trying to rewind the thing... > > It's mostly the older guys, often European immigrants, who will > come up to you and ask about the bike. P-licence-platers seemingly > harass you less from a normal cyclist experience. And everyone > uses the word "cheat!" :-) > > Since November, I've done about 3000 kms in commuting, touring, and > camping. A bit over a month ago I went on a Newcastle->Taree-> > Glouster->Armidale->Glouster->Newcastle ride. All up, it was 5 days of > riding time, 40 hours of bum-on-seat, and covered about 1100 kms. I > even managed to bump into aus.bike old-timer Linze while in > Armidale. I did keep a journal and had a digital camera with > me... I've just been slack writing up a report. ![]() > > -- > Chris |
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